1. Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA
2. International Global Change Institute, Hamilton 3210, New Zealand
3. International Research Institute for Climate and Society (IRI), Columbia University, Palisades, NY 10964, USA
4. The Bureau of Meteorology, Melbourne, VIC 3001, Australia
5. The School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia
6. CSIRO, Oceans and Atmosphere, Aspendale, Melbourne, VIC 3195, Australia